Preparation

Melt butter in heavy large skillet over
medium heat. Add onions and celery.
Sauté until vegetables are tender, about
12 minutes. Add all herbs; sauté 1 minute
longer. DO AHEAD: Can be made 1 day
ahead. Transfer to bowl, cover, and chill.

Preheat oven to 350°F. Divide bread
between 2 rimmed baking sheets.
Bake until bread is crusty but not hard,
reversing sheets after 5 minutes, 10 to
12 minutes total. Transfer to very large
bowl and cool.